OFDM系统中的空间频率分组码和码分复用

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI:10.1109/GLOCOM.2003.1258657

S. Kaiser

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引用次数: 28

摘要

本文研究了OFDM系统中不同的分集概念。它们是空间频率块码(sfbc)和码分多路(CDM)。对编码OFDM系统在瑞利衰落信道中的性能进行了比较。所应用的sfbc和CDM的共同之处在于它们没有速率损失，因此不会降低系统的带宽效率。当sfbc利用空间和频率分集时，CDM利用OFDM系统中的频率和时间分集。此外，在研究中还考虑了信道编码引起的分集增益的影响。

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Space frequency block codes and code division multiplexing in OFDM systems

The paper investigates different diversity concepts for OFDM systems. These are space frequency block codes (SFBCs) and code division multiplexing (CDM). The performances of both, and of combinations of both, are compared for coded OFDM systems in a Rayleigh fading channel. The applied SFBCs and CDM have in common that they have no rate loss and thus do not decrease the bandwidth efficiency of the system. While the SFBCs exploit space and frequency diversity, CDM exploits frequency and time diversity in OFDM systems. Additionally, the effects due to diversity gains by channel coding are taken into account in the investigations.

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GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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